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Title: Combustion synthesis of LaFeO{sub 3} sensing nanomaterial

Since industrial revolution, human activities drive towards unsustainable global economy due to the overexploitation of natural resources and the unacceptable emissions of pollution and greenhouse gases. In order to address that issue, engineering research has been focusing on gas sensors development for monitoring gas emissions and controlling the combustion process sustainability. Semiconductors metal oxides sensors are attractive technology because they require simple design and fabrication, involving high accessibility, small size and low cost. Perovskite oxides are the most promising sensing materials because sensitivity, selectivity, stability and speed-response can be modulated and optimized by changing the chemical composition. One of the most convenient synthesis process of perovskite is the citrate-nitrate auto-combustion method, in which nitrate is the oxidizing agent and citrate is the fuel and the chelating argent in the same time. Since the sensibility of perovskite oxides depends on the defective crystallographic structure and the nanomorphology, the experimental was designed in order to study the dependence of powder properties on the synthesis conditions, such as the solution acidity and the relative amount of metals, nitrates and citric acid. Crystalline structure was studied in depth for defining the effects of synthesis conditions on size, morphology and crystallographic structure of nanopowders ofmore » LaFeO{sub 3}.« less
Authors:
;  [1] ; ;  [2]
  1. ENEA-Casaccia Research Centre, Via Anguillarese 301, 00123 Rome (Italy)
  2. Department of Basic and Applied Sciences for Engineering, La Sapienza University, Via A. Scarpa 14/16, 00161 Rome (Italy)
Publication Date:
OSTI Identifier:
22490678
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1667; Journal Issue: 1; Conference: Nanoforum 2014, Rome (Italy), 22-25 Sep 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CHELATING AGENTS; CHEMICAL COMPOSITION; CITRATES; CITRIC ACID; CRYSTAL STRUCTURE; FERRITES; GREENHOUSE GASES; LANTHANUM COMPOUNDS; MORPHOLOGY; NANOSTRUCTURES; NITRATES; PEROVSKITE; PH VALUE; POWDERS; SEMICONDUCTOR MATERIALS; SENSITIVITY; SENSORS; SYNTHESIS